3 replies so far

I have mounted two identical blades on the table saw with a thin shim washer between to make 1/4” box joints. You just have to position the blades so the teeth are stagered. The two blades have to be identical and it’s best to have less than 40 teeth, like a rip blade, so there is room to clear out the chips and dust. I don’t see why you couldn’t put more washers in between to make up to a 3/8” kerf, but you would have to clean out the waste in the middle with a chisel. There is a set of blades on the market here in the USA that is made just for this purpose.

-- Michael: Hillary has a long list of accomplishments, though most DAs would refer to them as felonies.